Bending rolls machine



Ju. 25, 1938. R PARCELLS 2,106,534

BENDING ROLLS MACHINE Filed May 15, 1936 2 Sheets-Sheet 1 IIIHIIIIIIIIIIIIIIIII RSG 5I im Jan. 25, 1938. v

P. PARCELLS BENDING RoLLs MACHINE Filed Mayv 15, 19:56

2 Sheets-Sheet 2 'IIII/ lll l,

Patented Jan. 25, 1938 UNITED STATES 2,106,534 y BENDING ROLLS MACHINE Paul Parcells, Chicago, lll., assignor to Geo. Whiting Company, a corporation of Illinois Application May 15, 1936, Serial No. 79,995

4 Claims.

This invention relates particularly to bending rolls machines, such machines being commonly employed for forming sheet metal pipes, which may be either corrugated or non-corrugated.

5 Sheet metal corrugated pipes are commonly employed for culvert purposes.

Machines for forming large sheet metal pipes are ordinarily of heaW construction. To enable the pipe to be removed from the roll about which the sheet metal is bent into tubular form, the

bearing at one end of the roll is made withdrawable to enable the formed pipe to be slipped oi the roll. It is known practice, also, to provide means for shifting from nits normal position the roll about which the pipe is formed, aftery the bearing at one end of the roll has been Withdrawn.

The primary object of the present invention is to facilitate the withdrawal and the return. to

normal position of the removable bearing of the rolls thus facilitating the work, in the case of heavy machines, of removing the pipe from the machine after it has been formed.

A further object of the invention is to provide mechanism for opening the bearing at one end of a vertically movable roll and counterbalancing this movement with the movement of the mechanism for raising the roll.

The present invention is animprovement on the machine shown in my Patent No. 2,049,173,

granted July 28, 1936.

The invention is illustrated in the preferred embodiment in the accompanying drawings, in which- Fig. 1 is a broken vertical longitudinal elevational view of a machine embodying the invention; Fig. 2, a fragmentary View of one end of the machine showing the bearing in open position; Fig. 3, a perspective View of the yoke which pro.- vides eccentric bearings for lifting the movable roll; Fig. 4, a broken end elevational view of the machine; and Fig. 5, a vertical sectional view taken as indicated at line 5 of Fig. 1.

In the embodiment illustrated, A designates a frame, shown as comprising longitudinal basemembers A', main end-standards A2 and A3, and an intermediate standard A4, these standards being carried by the longitudinal base-members A;

0 A5, a swinging-standard mounted on a transverse pivot I carried by the main end-standard A3, the standard A5 being provided in its upper end with a bearing 2; B, a set of bending-rolls suitably supported in the frame, shown as comprising a lower roll B', a back-roll B3, and a shiftable upper rollI B3, the latter being the roll about which the pipe is to be formed.

The roll B is shown journaled in bearings 3 and 4 which are vertically adjustable in the standards A3 and A4, respectively. The roll B2 5 is mounted in adjustable bearings 5 with which the standards A3 and A4 are provided. The roll B3 has its fro-nt end-portion (drive end of machine) journaled in bearings 6 and I formingA a part of a yoke 8, the bearings being in the form of 10 eccentrics journaled in portions 9 of the standards A2 and A4.

A rock shaft I0 which is j ournaled in the standards of [the machine is provided with a hand operated lever II preferably disposed near the standard A4. As shown inl Figs. l and 4 a locking disk I2 is -supported on the pivot I3. This locking-disk drops by gravity into the locking position shownin Fig. 1. It may be swung away from this position through the medium of a stud I4 to unlock the lever II. The left end of the shaft I0, asfviewed in Fig. 1, is equipped with a crank I 5 which is linked to an arm I6 on the yoke 8 by means of a pitman II. When the rolls are in normal operative position the crank is in the position sho-Wn in Fig. 5 and when swung intothe position shown by the dotted lines the roll B3 will be raised as it is journaled eccentrically in the trunnions 6 and I. It may be noted that in its operative position the crank is slightly beyond dead center position so that the shaft IIl may rotate some distance before any appreciable lifting of the roll B3 takes place.

At the opposite end of the shaft I0, near the standard A3 is a crank member I 8 which is linked to a crank I9, provided on the pivot I, by means of a pitman 2li which is provided at each end with similar universal joints. Each universal joint has a block 2| journaled on the correspond` ing crank and is connected to a yoke member 22 by means of a pivot pin 23 provided at each end with cotter pins 24. The cranks I5 and I8 are. disposed so that the movement of the yoke 3 in raising the shaft of the roll B3 is counterbalanced by the movement of the standard A5 swinging from the end standard A3. As the crank I5 is slightly beyond dead center su'icient clearance is provided for the bearing 2 to open up before the roll B3 starts toI raise appreciab-ly. Thus it will be understood that the linkage enables the operator by one movement of the lever II to open the bearing 2 and raise the roll B3. As one move-V ment counterbalances the other it is unnecessary to provide a counterbalance on the yoke 8 and no other Cunterbalarice is necessary for the swinging standard A5.

A hand wheel 25 provided on a jack shaft 26 is provided to adjust the height of the roll B2 as is well known in the art and need not be described in detail. The rolls are driven by means of suitable gearing 21 as sho-wn in my patent referred to above, and is also well understood in the art.

The operating lever I I is sho-wn adjacent to the standard A4 as this is the most convenient position for the operator who feeds the plates in between the rolls B and B3. However, if desired, the handle may be arranged anywhere along the shaft l0 or on the connecting linkage, as will be readily understood. k

It will be understood that the grouping of the bending rolls may be as desired. It is known, for example, to locate the two lower rolls in a horizontal plane and locate the upper roll above the space between the two lower rolls.

The foregoing detailed description has been given for clearness of understandingonly, and no unnecessary limitations should be understood therefrom but the appended claims should be construed as broadly as permissible, in view of the prior art.

What I claim as new, and desire to secure by Letters Patent, is:

l. In combination: a machine comprising a set of bending rolls, a frame which comprises a main end-standard equipped with a swinging yoke' having two trunnions mounted to rock in said frame and provided with an eccentric bearing to receive one end of one of the rolls, an outwardly and downwardly swinging pivotedv standard provided with a bearing for the other end of said roll,y and means comprising an' oscill'atabl'e shaft provided with cranks for moving the pivoted standard bearing from engagement with the roll and moving said roll by rocking said yoke when said pivoted standard is pulled outwardly by hand.

2. In eombination a machine comprising a set of bending rolls, a frame which comprises a main end-standard equipped with a swinging yoke having two trunnions mounted to rock in said frame and provided with an eccentric bearing to receive one end of one of said rolls, an outwardly and downwardly swinging pivoted standard provided with a bearing for the other end of said roll, said standard being provided in an actuating arm, and means comprising an oscillatable shaft journaled in said frame and provided at one end with a crank linked to said yoke and provided at the other end with a crank which is linked to said actuating arm by means of a pit- 4man provided at each end with a connecting universal joint, whereby said rolls may be separated manually by drawing the pivoted standard outwardly.

3. A device as specified in claim 2, in which the cranks are arranged so that the pivoted :standard will swing outwardly before any substantial movement of the movable roll is accomgplished.

4. In a machine of the character set forth: a iset of bending rolls, a movable bearing for one end of one of said rolls adapted to raise and lower :said roll from a companion roll, an outwardly and `dov'vfivvardly swinging pivoted standard provided with 'a bearing for the opposite end of the movable roll, and connections between said pivotal stand- :ard and movable bearing for counterbalancing the vmovement of one against the other comprising .an oscillatable rock shaft provided with cranks Ilinked to operating arms provided on the movable 4,bearing and on the swinging standard, saidrock :shaft being oscillatable by means of a hand lever Amounted thereon, and said cranks being angularily 'disposed on the rock shaft so as to swing be- ;yond the dead center of said rock shaft after lowering the roll whereby the roll is locked in roperative position.

PAUL PARCELLS. 

